MOD = 998244353

n, q = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

dp = [0] * (n + 1)
dp[0] = 1

for i in range(n):
    a = A[i]
    for k in range(i + 1, 0, -1):
        dp[k] = (dp[k] * (a - 1) + dp[k - 1]) % MOD
    dp[0] = dp[0] * (a - 1) % MOD

for b in B:
    print(dp[b] % MOD)